JPS5387769A - Electro-mechanical transducer drivig circuit for watach - Google Patents

Electro-mechanical transducer drivig circuit for watach

Info

Publication number
JPS5387769A
JPS5387769A JP267977A JP267977A JPS5387769A JP S5387769 A JPS5387769 A JP S5387769A JP 267977 A JP267977 A JP 267977A JP 267977 A JP267977 A JP 267977A JP S5387769 A JPS5387769 A JP S5387769A
Authority
JP
Japan
Prior art keywords
electro
circuit
mechanical transducer
watach
drivig
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP267977A
Other languages
Japanese (ja)
Inventor
Akio Nakajima
Tadayasu Machida
Kenji Yamada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP267977A priority Critical patent/JPS5387769A/en
Priority to US05/821,433 priority patent/US4158287A/en
Priority to GB32986/77A priority patent/GB1580580A/en
Publication of JPS5387769A publication Critical patent/JPS5387769A/en
Priority to HK347/82A priority patent/HK34782A/en
Priority to SG393/83A priority patent/SG39383G/en
Priority to MY296/84A priority patent/MY8400296A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electromechanical Clocks (AREA)
  • Control Of Stepping Motors (AREA)

Abstract

PURPOSE:To achieve the reduction in thickness and size of a watch as an electro-mechanical transducer driving circuit for watches of small power consumption by detecting the change in power source voltage at the low temperature time, etc., controlling driving pulse width and driving a step motor, etc.
JP267977A 1976-08-12 1977-01-13 Electro-mechanical transducer drivig circuit for watach Pending JPS5387769A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP267977A JPS5387769A (en) 1977-01-13 1977-01-13 Electro-mechanical transducer drivig circuit for watach
US05/821,433 US4158287A (en) 1976-08-12 1977-08-03 Driver circuit for electro-mechanical transducer
GB32986/77A GB1580580A (en) 1976-08-12 1977-08-05 Electronic timepiece
HK347/82A HK34782A (en) 1976-08-12 1982-07-29 An electronic timepiece
SG393/83A SG39383G (en) 1976-08-12 1983-07-06 An electronic timepiece
MY296/84A MY8400296A (en) 1976-08-12 1984-12-30 An electronic timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP267977A JPS5387769A (en) 1977-01-13 1977-01-13 Electro-mechanical transducer drivig circuit for watach

Publications (1)

Publication Number Publication Date
JPS5387769A true JPS5387769A (en) 1978-08-02

Family

ID=11535980

Family Applications (1)

Application Number Title Priority Date Filing Date
JP267977A Pending JPS5387769A (en) 1976-08-12 1977-01-13 Electro-mechanical transducer drivig circuit for watach

Country Status (1)

Country Link
JP (1) JPS5387769A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62225199A (en) * 1986-03-25 1987-10-03 Koyo Seiko Co Ltd Control device for stepping motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62225199A (en) * 1986-03-25 1987-10-03 Koyo Seiko Co Ltd Control device for stepping motor

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